Patch that makes your application readable to crawlers if you  have '!' ...

Hi, I had an issue with FB graph API and other crawlers.
It seems that the crawlers encode the URL if there is a '!' sign in your application URL, which stops your library from working correctly.

I've added decodeURIComponent function at line 51 of the angular-seo-server.js file, which prevents this behavior from happening, and doesn't affect anything else.

I've run your tests, and also did some manual testing with my applicantion and everything seems fine.

I hope that you'll be able to receive this modest contribution